When using SQLcl or SQL*Plus with Oracle Database, you may have noticed feedback at the bottom of your query results that tells you how many rows were selected. For example, 100 rows selected (or however many rows were returned).
If you want to get rid of this, you can use SET FEEDBACK OFF.
You also have the option of setting a row threshold, which allows you to specify how many rows should be returned before feedback is provided.
Continue readingThere are many ways to perform date arithmetic in MariaDB. This includes adding or subtracting a certain number of a given date part from a date or datetime value.
In this article, I present 8 ways to add an hour to a datetime value in MariaDB.
Continue readingSome RDBMSs provide an LPAD() and RPAD() function that enables us to left pad or right pad a string. Some functions also allow us to add leading or trailing zeros numbers.
Below are examples of applying SQL padding in some of the more popular RDBMSs.
Continue readingIn Azure SQL Edge, you can query the sys.databases catalog view to see the recovery model for each database.
PostgreSQL provides us with the following ways to concatenate strings and numbers:
CONCAT() function, which concatenates its arguments.||), which concatenates its operands.Examples of each below.
Continue readingIf you get an error that reads The statement BACKUP LOG is not allowed while the recovery model is SIMPLE when trying to back up a database in SQL Server or Azure SQL Edge, it’s because you’re trying to back up the transaction logs on a database that uses the simple recovery model.
To fix this, change the recovery model to either full or bulk logging.
Continue readingIn SQL Server, the TODATETIMEOFFSET() function was specifically designed to return a datetimeoffset value from a datetime2 value.
Given the fact that the datetime2 data type doesn’t actually support time zone offsets, and datetimeoffset must contain the offset, the TODATETIMEOFFSET() function allows you to specify a time zone offset to use.
This article provides some examples to demonstrate.
Continue readingMariaDB has the FORMAT() function, which formats a number based on the given format string.
It returns the number as a formatted string, with thousands and decimal separators in the appropriate position and rounds the result to the specified decimal position.
You can optionally specify a locale value to format numbers to the pattern appropriate for the given region.
Continue readingMost of the major RDBMSs provide several options for concatenating two or more strings.
CONCAT() function, which concatenates its arguments.CONCAT_WS() that allows you to specify a separator that separates the concatenated strings.Below are examples of each method.
Continue readingIn SQL Server, you can use the LOGINPROPERTY() to return information about login policy settings.
This includes being able to return data for bad password attempts, as well as the time of the last failed login attempt due to a bad password.
Continue reading